Wrench



No. 6I3,573. Patented Nov. I, I898.

c. JACOBY, Sn. WRENCH.

(Application filed Mar. 24, 1897.)

(No Modal.)

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wire

STATES WRENCH.

SPECIFICATION forming part of Letters Patent No. 613,573, dated November1, 1898.

Application filed March 24 1 897.

To all whom, it may concern:

Be it known that I, CHARLES JAooBY, Sr., of Oroton-on-Hudson, in thecounty of Vestchester and State of New York, have invented certain newand useful Improvements in renches; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same. 7

My invention relates to improvements in wrenches; and theobject of thesame is to so construct a wrench that the article to which it is appliedwill not be disfigured by the jaws thereof and at the same time toprevent wear upon the jaws. I

The invention also consists of certain other novel details ofconstruction,hereinafter more particularly set forth and claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a perspective view of my invention. Fig. 2 illustrates thewrench applied to a nut. Fig. 3 is a view of the parts detached. Fig. 4:is a perspective view of my invention applied to an alligator-wrench.

Referring to the accompanying drawings, 1 indicates the lower orstationary jaw, and 2 the upper or movable jaw. The jaws are formed withthe centrally-abutting portions 3and are connected by the links 4, whichrest in the recesses 6 in the sides of the jaws. These links are rigidwith the lower jaw, but pivoted to the upper jaw, so that the movementof the upper jaw upon the links is afforded, the link-receiving recessesof the upper jaw being enlarged to permit such movement, as will appearfrom the annexed drawings. The abutting portions are cut away at aninclination upon the outer or forward sides of the same, so that amovement of the movable jaw upon the stationary jaw is permitted. Bothjaws are cut away at their inner ends to afford space between them forthe operating-handle. The stationary jaw is provided on its rear endwith a perforated lug 7, by means of which thehandle 8 is pivoted tosaid jaw, the lug 7 extending within the recess formed in the lug9,which depends from the under side of, the handle. The handle isprovided with an inclined projection 10, that extends from its upperedge and engages the Serial No. 628,977. (No model.)

correspondingly-shaped cut-out portion 11 on the rear end of the movablejaw. Y A spring 13 is secured at one end to the under side of the handleand at its opposite end bears against the rounded edge 14 of thestationary jaw. This spring servesto hold the jaws normally closed andthe movement of the movable jaw against the tension of said spring.

When the wrench is to be used upon the nut or other obj ect,the same isinserted within the nut-receiving opening formed between the jaws andthe operatinghandle is depressed. This depression of the operatinghandlecauses its forward end, which works in the cut-away portion of themovable jaw, to move the outer end of said jaw toward the stationaryjaw, and thus clamp the nutfirmly and securely. This movement iseffected by the engagement of the projection upon the forward end of thehandle with the wall of the cut-out portion of the movable jaw,whichmoves said jaw through the medium of the links connecting it to thestationary jaw. The movable jaw is provided with a lip or projection 90,with whicha corresponding projection z on the handle engages to throwthe jaws open when the handle is released by the operator and is thrownback by means of the spring 13. The movable jaw will grip the nut with aforce proportionate to the force applied to the operating-handle. Itwill be seen that there is no movement between the nut and wrench, andtherefore neither the nut or the jaws of the wrench will be marred orworn. WVhen it is desired torelease the wrench from the nut, the handleis released and its movement reversed, which permits the movable jaw toreturn to its normal position, the spring efiecting such movement.

My invention can be applied to the form of wrench known as thealligator-wrench, the construction being the same, with the exception ofthe spring, which is omitted. The wedge-shaped opening between the jawsreceives the object to be operated upon, which, owing to the shape ofthe opening, forces the jaws apart, thus dispensing with the spring. Inthis construction I make one of the jaws smooth,while I serrate theother jaw, although teeth may be formed upon both of the jaws, the teethupon the upper jaw inclining inwardly and those in the lower jawoutwardly,

as may be desired. When this wrench is applied to a nut or other object,the teeth of the wrench are forced into the metal by the movement of thehandle, as will be understood.

From the above description it will be seen that I have produced a wrenchin which the disfiguring of the part of the object to which it may beapplied and the wearing of the jaws of the wrench are obviated.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. A wrench comprising a stationary jaw, a movable jaw, said jaws beingrecessed 011 their side faces, links positioned in said recesses andpivoted at one end to the movable jaw and at their opposite ends rigidlysecured to the stationary jaw, and an operating-handle pivoted to thestationary jaw and adapted to operate the movable jaw, substantially asdescribed.

2. A wrench comprising jaws having centrally-abutting portions, theinner ends of the jaws recessed, links pivoted to the movable j aw andrigidly secured to the stationary jaw, and an operating-handle pivotedto the stationary jaw and fitting within the recessed ends of the jaws,said handle having a pro j ection adapted to extend into a recess formedupon the movable jaw whereby the movement of the handle elfects themovement of the movable jaw upon the stationary jaw, substantially asdescribed.

3. A wrench comprising a movable and a stationary jaw, said jaws beingrecessed upon their faces, links adapted to fit in said recesses,secured at one end to the stationary jaw and pivoted at their oppositeends to the movable jaw, the stationary jaw provided with a lug, anoperating-handle pivoted to the lug of the stationary jaw, the movablejaw provided with a lip or projection which is engaged by a projectionupon the end of the handle, and means for returning the movable jaw toits normal position after it is operated, substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscrib= ing witnesses.

CHAS. JACOBY, SR.

\Vitnesses:

CARTRIGHT PRICE, FRANK RAY.

